By Rick Copeland
"'Essential SQLAlchemy' richtet sich an Python-Entwickler, die eine SQL-Schnittstelle sowie einen item Relational Mapper nutzen wollen - die SQLAlchemy-Bibliothek [...]" - iX, August 2009 "SQLAlchemy ist in Python-Kreisen verbreitet und erfreut sich mittlerweile großer Beliebtheit - leider fehlte bisher aber eine umfassende Dokumentation, die die Möglichkeiten von SQLAlchemy angemessen darstellt. Das vorliegende Buch aus dem O'Reilly Verlag schafft hier Abhilfe, erläutert den Umgang und die Handhabung auf nachvollziehbare Weise und liefert diesbezüglich jede Menge nützlicher Beispiele sowie viel fabric für die sofortige Verwendung." - entwickler-magazin, Februar 2009
Essential SQLAlchemy introduces a high-level open-source code library that makes it more uncomplicated for Python programmers to entry relational databases corresponding to Oracle, DB2, MySQL, PostgreSQL, and SQLite. SQLAlchemy has turn into more and more renowned due to the fact that its liberate, however it nonetheless lacks sturdy offline documentation. This sensible publication fills the distance, and since a developer wrote it, you get an aim examine SQLAlchemy's instruments instead of an advocate's description of the entire "cool" positive aspects. SQLAlchemy contains either a database server-independent SQL expression language and an object-relational mapper (ORM) that allows you to map "plain outdated Python items" (POPOs) to database tables with no considerably altering your present Python code. crucial SQLAlchemy demonstrates the way to use the library to create an easy database program, walks you thru uncomplicated queries, and explains the right way to use SQLAlchemy to hook up with a number of databases concurrently with a similar Metadata. you furthermore may easy methods to: * Create customized varieties for use on your schema, and whilst it is priceless to take advantage of customized instead of integrated kinds * Run queries, updates, and deletes with SQLAlchemy's SQL expression language * construct an item mapper with SQLAlchemy, and comprehend the diversities among this and energetic list styles utilized in different ORMs * Create items, retailer them to a consultation, and flush them to the database * Use SQLAlchemy to version item orientated inheritance * supply a declarative, lively checklist development to be used with SQLAlchemy utilizing the Elixir extension * Use the SQLSoup extension to supply an automated metadata and item version in line with database mirrored image additionally, you are going to learn the way and while to exploit different extensions to SQLAlchemy, together with AssociationProxy, OrderingList, and extra. crucial SQLAlchemy is the much-needed consultant for each Python developer utilizing this code library. rather than a feature-by-feature documentation, this ebook takes an "essentials" technique that offers you precisely what you must turn into effective with SQLAlchemy immediately.
By Alison Barrows
With the intention to study Microsoft entry inside and outside, the 9 minibooks during this easy-access reference are precisely what you would like. learn the booklet disguise to hide, or bounce into any of the minibooks for the guide and subject matters you would like so much. the way to attach entry to SQL Server, control your info in the neighborhood, use nifty new positive factors from place of work 2010 corresponding to the improved Ribbon, create queries and macros like a champ, and lots more and plenty extra. From the fundamentals to complex services, it truly is what you must make entry extra accesssible.
By Burleson D.K., Celko J., Cook J.P.
By Levner E. (ed.)
Levner E. (ed.) Multiprocessor scheduling. idea and purposes (I-Tech, 2007)(ISBN 9783902613028)(600dpi)(T)(445s)_CsAl_
By Mark Pollack, Oliver Gierke, Thomas Risberg, Jon Brisbin, Michael Hunger
You can opt for numerous information entry frameworks while construction Java company functions that paintings with relational databases. yet what approximately monstrous information? This hands-on creation exhibits you the way Spring facts makes it rather effortless to construct functions throughout a variety of new information entry applied sciences resembling NoSQL and Hadoop.
Through numerous pattern tasks, you’ll learn the way Spring info offers a constant programming version that keeps NoSQL-specific gains and functions, and is helping you enhance Hadoop functions throughout quite a lot of use-cases akin to info research, occasion move processing, and workflow. You’ll additionally notice the gains Spring facts provides to Spring’s latest JPA and JDBC help for writing RDBMS-based info entry layers.
* know about Spring’s template helper sessions to simplify using database-specific performance
* discover Spring Data’s repository abstraction and complicated question performance
* Use Spring information with Redis (key/value store), HBase (column-family), MongoDB (document database), and Neo4j (graph database)
* realize the GemFire dispensed information grid resolution
* Export Spring information JPA-managed entities to the internet as RESTful net prone
* Simplify the improvement of HBase purposes, utilizing a light-weight object-mapping framework
* construct instance big-data pipelines with Spring Batch and Spring Integration
By Art Tennick
250 + ready-to-use, robust DAX formulas
Develop powerful enterprise intelligence (BI) suggestions and force quicker, higher selection making throughout your small business with support from an skilled database advisor and coach. via transparent reasons, screenshots, and examples, Practical PowerPivot & DAX formulation for Excel 2010 exhibits you the way to extract actionable insights from immense quantities of company info. greater than 250 downloadable DAX formulation plus helpful appendixes protecting SQL, MDX, and DMX question layout are incorporated during this hands-on consultant. * construct pivot tables and charts with PowerPivot for Excel * Import info from entry, Excel, information feeds, SQL Server, and different resources * arrange and layout BI experiences utilizing the PowerPivot box record * Write DAX formulation that clear out, variety, ordinary, and denormalize info * build advanced DAX formulation from statistical, math, and date services * evaluate present and previous functionality utilizing date and time intelligence * deal with non-additive numbers, non-numeric values, and working totals * advance entire self-service and sharable BI options in a couple of minutes
Download the resource code from www.mhprofessional.com/computingdownload
By Benjamin Rosenzweig; Elena Silvestrova Rakhimov
By Jan Schaffner
With the proliferation of Software-as-a-Service (SaaS) choices, it's turning into more and more very important for person SaaS prone to function their companies at a in your price range. This ebook investigates SaaS from the viewpoint of the supplier and exhibits how operational expenses should be decreased by utilizing “multi tenancy,” a method for consolidating a lot of buyers onto a small variety of servers.
Specifically, the booklet addresses multi tenancy at the database point, targeting in-memory column databases, that are the spine of many very important new firm functions. For successfully enforcing multi tenancy in a farm of databases, primary demanding situations needs to be addressed, (i) workload modeling and (ii) info placement. the 1st contains estimating the (shared) source intake for multi tenancy on a unmarried in-memory database server. the second one is composed in assigning tenants to servers in a manner that minimizes the variety of required servers (and hence expenditures) in response to the assumed workload version. This step additionally includes replicating tenants for functionality and excessive availability. This booklet offers novel options to either problems.
By David Ostrovsky, Yaniv Rodenski
Seasoned Couchbase Server is a hands-on advisor for builders and directors who are looking to benefit from the ability and scalability of Couchbase Server of their functions. This booklet takes you from the fundamentals of NoSQL database layout, via software improvement, to Couchbase Server management. by no means have record databases been so strong and performant.
The NoSQL stream has essentially replaced the database global in recent times. stimulated by way of the starting to be wishes of web-scale functions, NoSQL databases similar to Couchbase Server supply new methods to scalability, reliability, and function. With the ability and suppleness of Couchbase Server, you could version your facts despite the fact that you will want, and simply switch the information version any time you will want. seasoned Couchbase Server exhibits what's attainable and is helping you're taking complete good thing about Couchbase Server and all of the functionality and scalability that it bargains.
Helps you layout and strengthen a record database utilizing Couchbase Server.
Takes you thru deploying and conserving Couchbase Server.
Gives you the instruments to scale out your software as wanted.